David Kirsch may train celebrities like Jennifer Lopez, Britney Spears, and Heidi Klum, but thanks to the power of the Internet, we like to think he's our trainer, too. Kirsch regularly posts his ...

Some abs exercises can get a little tedious the more you do them, including planks. Thankfully, there are a few ways you can get a good abs pump and continue to develop core muscle without setting up ...

Sample this at-home full-body workout from the Women's Health Build & Burn series, programmed by Obé instructor and functional strength coach Alexandra Mack.

Feeling inspired by Livvy Dune’s abs, but don’t quite have the same amount of hours to spend in the gym as her? We’ve good news: you actually don’t need *that* much time to make a difference when it ...

Has your core routine gotten stale? I know mine has. While crunches, Russian Twists, and planks are effective, after doing them a bunch, they might get a little, well, boring. Not to mention, there ...

You have to engage your core constantly as you sit straight, stand tall, and walk confidently, which requires a lot of endurance in your midsection muscles. The best way to build ab endurance? A core ...

While trendy workouts come and go, Pilates has serious staying power. It's simple, effective, and most importantly, you can take the workout with you wherever you go. If you've never tried Pilates ...

As a runner, you don’t want to neglect core strength. These key midsection muscles provide the stabilization and upright posture you need to run efficiently and injury-free. And you can really turn up ...

While crunches, sit-ups, planks, and other floor-bound movements are effective core-strengthening exercises, standing abdominal workouts offer unique benefits, especially for runners. If you’re ...